• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Structuer-function relationship of CoDN3, an effector of Colletotrichum orbiculare

Research Project

Project/Area Number 17K08194
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Applied molecular and cellular biology
Research InstitutionJapan Advanced Institute of Science and Technology

Principal Investigator

Ohki Shinya  北陸先端科学技術大学院大学, ナノマテリアルテクノロジーセンター, 教授 (70250420)

Co-Investigator(Kenkyū-buntansha) 森 正之  石川県立大学, 生物資源環境学部, 准教授 (00320911)
高野 義孝  京都大学, 農学研究科, 教授 (80293918)
Project Period (FY) 2017-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2019: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2018: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2017: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Keywordsエフェクター / 構造 / 機能 / 相互作用 / 植物免疫学 / 構造生物学 / 試料調製 / タンパク質 / NMR / 蛋白質 / 植物 / 菌類 / 感染症
Outline of Final Research Achievements

Nuclear magnetic resonance (NMR) data directly indicated a Ca2+-dependent interaction between calmodulin (CaM) and CoDN3, a small effector of the plant pathogenic fungus Colletotrichum orbiculare,which is the causal agent of cucumber anthracnose. The overall conformation of CoDN3 is intrinsicallydisordered, and the CaM-binding site spans residues 34-53 of its C-terminal region. Experimentsemploying a chemically synthesized peptide corresponding to the CaM-binding site indicated that theCaM-binding region of CoDN3 in the Ca2+-bound CaM complex takes ana-helical conformation. Celldeath suppression assay using a CoDN3 mutant lacking the CaM-binding ability suggested that the wildtype CaM-binding site is necessary for full CoDN3 functionin vivo.

Academic Significance and Societal Importance of the Research Achievements

ウリ科植物の病原菌 Colletotrichum orbiculareが植物細胞に分泌するDN3というエフェクターについて、その構造と機能の一端を明らかにした。さらに、このDN3が機能を発揮するメカニズム、すなわち、感染機構に関して、植物タンパク質CaMが重要な役割を担っていることを見出した。この研究結果は、学術的なインパクトだけでなく、植物の感染予防薬を開発するうえでの有益な情報を与えるものである。従って、食糧問題の解決に寄与するポテンシャルを持っている成果であり、社会的にも意義があるものと考えられる。

Report

(4 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Research-status Report
  • 2017 Research-status Report
  • Research Products

    (3 results)

All 2019 2018 2017

All Journal Article (1 results) (of which Peer Reviewed: 1 results,  Open Access: 1 results) Presentation (2 results)

  • [Journal Article] Ca2+-dependent interaction between calmodulin and CoDN3, an effector of Colletotrichum orbiculare2019

    • Author(s)
      Isozumi Noriyoshi、Inoue Yoshihiro、Imamura Tomohiro、Mori Masashi、Takano Yoshitaka、Ohki Shinya
    • Journal Title

      Biochemical and Biophysical Research Communications

      Volume: 514 Issue: 3 Pages: 803-808

    • DOI

      10.1016/j.bbrc.2019.05.007

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] Studies on the plant recognition of the C-terminal region of the Colletotrichum orbiculare NLP12018

    • Author(s)
      Chen, J., Inoue, Y., Tanaka, S., Singkaravanit-Ogawa, S., Ohki, S., Kaido, M., Mise, K., and Takano, Y.
    • Organizer
      植物病理学会
    • Related Report
      2018 Research-status Report
  • [Presentation] Colletotrichum Orbiculare由来エフェクターDN3はカルモジュリン結合タンパク質か?2017

    • Author(s)
      飯野真心、富田沙理、五十棲規嘉、高野義孝、森正之、大木進野
    • Organizer
      第59回 日本植物生理学会年会
    • Related Report
      2017 Research-status Report

URL: 

Published: 2017-04-28   Modified: 2021-02-19  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi